Lazarus Archive · LZ-38429

GyreMap 2.0

Valentina Okonkwo, 1992. Application software for the BBC Micro.

Description

A route planner for the BBC Micro, published by Valentina Okonkwo in 1992.

Provenance

Donated by the creator’s family in 2025. The tape was sticky with binder breakdown and was baked at low temperature before a single careful read. The image matches a checksum published by the original distributor.

Preservation

Fixity (SHA-256)
d6720623539cba0bfa1349603546bc24943f8bdae86539d2227a766b87b2afa6
Last verified
Oct 13, 2026, by Vigil
Emulation profile
LZE-BBC-5 · lz-6502 core
Copies
Three, on two kinds of storage, in two cities
Original carriers
Kept in cold storage in Vancouver

Access

Free, in the Lazarus reading room in Vancouver and in partner reading rooms.

In the reading room it runs in emulation under profile LZE-BBC-5, from a read-only copy of the recovered image, as it would have on the BBC Micro.

Cite as: Valentina Okonkwo, GyreMap 2.0 (1992). Lazarus Archive, LZ-38429.

Also by Valentina Okonkwo

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